distutils is deprecated in Python 3.10 and later.

[domdfcoding]

The distutils package is deprecated as of Python 3.10 and is slated for removal in Python 3.12

pytest-timeout uses LooseVersion here:

pytest-timeout/pytest_timeout.py

Lines 397 to 402 in 1a35f94

	pytest_version = LooseVersion(pytest.__version__)
	if pytest_version >= LooseVersion("3.7.3"):
	capman.suspend_global_capture(item)
	stdout, stderr = capman.read_global_capture()
	else:
	stdout, stderr = capman.suspend_global_capture(item)

I wonder if this might be better served with a hasattr check for read_global_capture? Another option is to use the version numbers from packaging, which pytest already depends on and is the recommended replacement for handling version numbers.

---

See PEP 631 for more information on the distutils deprecation.

Full traceback when running with -Werror:

Traceback (most recent call last):
  File "/usr/lib/python3.10/runpy.py", line 196, in _run_module_as_main
    return _run_code(code, main_globals, None,
  File "/usr/lib/python3.10/runpy.py", line 86, in _run_code
    exec(code, run_globals)
  File "/usr/lib/python3.10/site-packages/pytest/__main__.py", line 5, in <module>
    raise SystemExit(pytest.console_main())
  File "/usr/lib/python3.10/site-packages/_pytest/config/__init__.py", line 185, in console_main
    code = main()
  File "/usr/lib/python3.10/site-packages/_pytest/config/__init__.py", line 143, in main
    config = _prepareconfig(args, plugins)
  File "/usr/lib/python3.10/site-packages/_pytest/config/__init__.py", line 318, in _prepareconfig
    config = pluginmanager.hook.pytest_cmdline_parse(
  File "/usr/lib/python3.10/site-packages/pluggy/hooks.py", line 286, in __call__
    return self._hookexec(self, self.get_hookimpls(), kwargs)
  File "/usr/lib/python3.10/site-packages/pluggy/manager.py", line 93, in _hookexec
    return self._inner_hookexec(hook, methods, kwargs)
  File "/usr/lib/python3.10/site-packages/pluggy/manager.py", line 84, in <lambda>
    self._inner_hookexec = lambda hook, methods, kwargs: hook.multicall(
  File "/usr/lib/python3.10/site-packages/pluggy/callers.py", line 203, in _multicall
    gen.send(outcome)
  File "/usr/lib/python3.10/site-packages/_pytest/helpconfig.py", line 100, in pytest_cmdline_parse
    config: Config = outcome.get_result()
  File "/usr/lib/python3.10/site-packages/pluggy/callers.py", line 80, in get_result
    raise ex[1].with_traceback(ex[2])
  File "/usr/lib/python3.10/site-packages/pluggy/callers.py", line 187, in _multicall
    res = hook_impl.function(*args)
  File "/usr/lib/python3.10/site-packages/_pytest/config/__init__.py", line 1003, in pytest_cmdline_parse
    self.parse(args)
  File "/usr/lib/python3.10/site-packages/_pytest/config/__init__.py", line 1283, in parse
    self._preparse(args, addopts=addopts)
  File "/usr/lib/python3.10/site-packages/_pytest/config/__init__.py", line 1172, in _preparse
    self.pluginmanager.load_setuptools_entrypoints("pytest11")
  File "/usr/lib/python3.10/site-packages/pluggy/manager.py", line 299, in load_setuptools_entrypoints
    plugin = ep.load()
  File "/usr/lib/python3.10/importlib/metadata/__init__.py", line 160, in load
    module = import_module(match.group('module'))
  File "/usr/lib/python3.10/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1050, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1027, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1006, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "/usr/lib/python3.10/site-packages/_pytest/assertion/rewrite.py", line 170, in exec_module
    exec(co, module.__dict__)
  File "/usr/lib/python3.10/site-packages/pytest_timeout.py", line 16, in <module>
    from distutils.version import LooseVersion
  File "/usr/lib/python3.10/distutils/__init__.py", line 19, in <module>
    warnings.warn(_DEPRECATION_MESSAGE,
DeprecationWarning: The distutils package is deprecated and slated for removal in Python 3.12. Use setuptools or check PEP 632 for potential alternatives

[flub]

Yeah, I noticed this recently as well. Seems a bit silly to do this version sniffing. I looked through some history and there seems no good reason given. It just started out simple and then was made more and more complicated. I actually wonder if today we can not just entirely remove this code and simply require on a pytest that's more recent in setup.py?

Would you like to make a PR for that?